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Microphone

Explained: MAX4466 Electret Microphone Amplifier Module with Adjustable Gain

Last Updated on March 14, 2025 by Swagatam Leave a Comment

In this post we will be talking about this MAX4466 microphone amplifier module, right? So this is a tiny little circuit that can amplify weak sound signals from an electret condenser microphone (ECM). That means it is going to take a very small electrical signal from the microphone and then boost it up so we […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Electret, Explained, MAX4466, Microphone, Module

Using Electret Microphone on Computer PC

Last Updated on May 4, 2023 by Swagatam Leave a Comment

how to use electret MIC with computer

The small circuit that we propose here provides a 20 dB gain to the microphone signal, which will finally allow you to effectively use an electret microphone on your PC. Circuit Description The diagram of our circuit is reproduced in the Figure below. Don’t expect a complicated diagram with op-amps everywhere, as our circuit is […]

Filed Under: Audio and Amplifier Projects Tagged With: Computer, Electret, Microphone, PC

Balanced Microphone Preamplifier Circuit

Last Updated on September 13, 2023 by Swagatam 4 Comments

balanced 4

In this post I have explained about a simple Hi-Fi balanced microphone preamplifier circuit and also evaluate the calculations, specifications of the design through formulas. What is a Balanced Preamplifier A “balanced” amplifier or differential amplifier possesses not one but two distinct inputs and only the difference amongst these inputs is actually amplified. To elucidate […]

Filed Under: Audio and Amplifier Projects Tagged With: Balanced, Microphone, Preamplifier

How to Build a Microphone Amplifier Circuit

Last Updated on May 5, 2022 by Swagatam 26 Comments

lm324

In this article we are going to see how to build a microphone amplifier circuit with operational amplifier LM324. This circuit can be used as good pre-amplifier for audio projects. Selecting an Opamp The heart of the mic amplifier circuit is an op-amp LM324 which is quad op-amp moulded in single IC. We are going […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Build, Microphone

FM Wireless Microphone Circuit – Construction Details

Last Updated on November 8, 2023 by Swagatam 45 Comments

fm 2

A wireless microphone is a portable electronic microphone which allows the user to transmit its voice to an amplifier without any wire connection, hence the name wireless microphone. Making a wireless mic at home can be real fun, here I have explained one such simple project which can be used for recording and paying back […]

Filed Under: Transmitter Circuits Tagged With: Construction, Details, FM, Microphone, Wireless

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